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E2400-0300ET-G

4.0KW 230V Low Flow Heater E2400-0300ET-G

Part #: E2400-0300ET-G

$453.96
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

The HydroQuip E2400-0300ET-G is a 4.0kW low flow heater assembly designed for Gatsby spa systems and compatible hot tubs. Operating at 230V, this OEM heater delivers reliable performance for maintaining optimal water temperature in residential spas requiring low flow heating solutions.

Built to HydroQuip's exacting standards, this heater assembly provides the exact fit and specifications your spa system demands. We guarantee precise fitment and back every heater with our comprehensive 1-year warranty. Orders ship the same day for minimal downtime. The low flow design makes this heater suitable for spas with circulation pumps or systems requiring reduced flow rates. Always verify your existing heater's voltage, wattage, and connection specifications before installation to ensure proper compatibility with your spa's electrical system.

Exact part number

E2400-0300ET-G

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Also known as / Replaces

This part replaces or is interchangeable with:

  • E2400 series heater
  • Gatsby spa heater
  • HydroQuip low flow heater assembly

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Voltage
230V

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Spa not heating or holding temperature
  • OH (overheat) fault code on control panel
  • HH (heater high limit) fault code on control panel
  • Heater element failure or burnout
  • Spa water temperature dropping below set point
  • Control system reporting heater circuit fault

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your spa operates on 230V — do not install on a 120V system
  • Verify your system uses a low flow or circulation pump configuration, not a high-flow main pump for heating
  • Match the 4.0kW wattage rating to your existing heater label before ordering
  • Check the physical heater tube length and union connection points against your current heater
  • Confirm this is the OEM HydroQuip heater assembly specified for your Gatsby spa model
  • Have a licensed electrician handle any wiring connections if you are not qualified to work on 230V spa equipment

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 45-90 minutes

What's in the box

  • 4.0kW heater assembly
  • High limit sensor
  • Pressure switch

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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